Loving this rom as well... consistently getting 8's on linpack.
As far as SDCard it was driving me nuts.. If you back up all your data from the card than select on card and format I was able to get it to be seen. Recopied data to card and it was working like a charm.
(Yes i had it partitioned with ext. Formating in windows, common problem people have, did not work and our recovery does not have easy user interface to clear out partitions like the G1.)